Electronic device to support dual connectivity and operating method thereof

Abstract

An electronic device is provided. The electronic device includes at least one communication processor configured to support a first network communication and a second network communication, and a memory configured to store information about at least one first band supporting dual connectivity for the first network communication and the second network communication among a plurality of bands which correspond to the first network communication supported by the electronic device, and the at least one communication processor may be configured to camp on a first cell supporting the first network communication, after camping on the first cell, perform a measurement on at least some of the at least one first band among the plurality of bands in an idle state, and perform a cell reselection based on a measurement result for the at least some of the at least one first band. Herein, a measurement on a remaining band except for the at least one first band among the plurality of bands may not be performed.

What is claimed is: 
     
       1. An electronic device comprising:
 at least one communication processor configured to support a first network communication and a second network communication; and 
 a memory configured to store information about at least one first band supporting dual connectivity for the first network communication and the second network communication among a plurality of bands which correspond to the first network communication supported by the electronic device, 
 wherein the at least one communication processor is further configured to:
 camp on a first cell supporting the first network communication, 
 after camping on the first cell, perform a measurement on at least some of the at least one first band among the plurality of bands in an idle state, wherein a measurement on a remaining band except for the at least one first band among the plurality of bands is not performed, 
 perform a cell reselection based on a measurement result for the at least some of the at least one first band, 
 perform a measurement on the first cell, 
 identify whether a measurement result for the first cell satisfies a first condition, and 
 based on identifying that the first condition is satisfied, determine to perform a measurement on the at least one first band among the plurality of bands and not to perform the measurement on the remaining band except for the at least one first band, and 
 
 wherein, as at least part of identifying whether the measurement result for the first cell satisfies the first condition, the at least one communication processor is configured to identify whether the measurement result for the first cell is greater than a sum of a threshold value and a value set for a hysteresis operation. 
 
     
     
       2. The electronic device of  claim 1 , wherein the at least one communication processor is further configured to:
 identify whether the first cell supports the dual connectivity, and 
 based on identifying that the first cell supports the dual connectivity, determine to perform a measurement on the at least one first band among the plurality of bands and not to perform the measurement on the remaining band except for the at least one first band. 
 
     
     
       3. The electronic device of  claim 2 , wherein, as at least part of identifying whether the first cell supports the dual connectivity, the at least one communication processor is configured to:
 receive system information from the first cell, and 
 based on whether upperlayerindication-r15 included in the system information is true, identify whether the first cell supports the dual connectivity. 
 
     
     
       4. The electronic device of  claim 1 , wherein the at least one communication processor is further configured to:
 perform a measurement on the first cell while the measurement on the remaining band except for the at least one first band is not performed and the measurement for the at least some of the at least one first band is performed, 
 identify whether a measurement result for the first cell satisfies a second condition, and 
 based on identifying that the second condition is satisfied, perform the measurement on the remaining band except for the at least one first band and perform a measurement on at least some of the plurality of bands. 
 
     
     
       5. The electronic device of  claim 4 , wherein, as at least part of identifying whether the measurement result for the first cell satisfies the second condition, the at least one communication processor is configured to identify whether the measurement result for the first cell is less than a value generated by subtracting a value set for a hysteresis operation from a threshold value. 
     
     
       6. The electronic device of  claim 1 , wherein the at least one communication processor is further configured to change a capability of the electronic device including information about a band supported by the electronic device from a first capability including the plurality of bands to a second capability including the at least one first band. 
     
     
       7. The electronic device of  claim 6 , wherein the at least one communication processor is further configured to:
 transmit a tracking area update (TAU) request indicating an update request for update information for the capability of the electronic device, 
 receive a user equipment (UE) capability inquiry corresponding to the TAU request, and 
 in response to the UE capability inquiry, transmit a message including a UE capability information field including information about the second capability. 
 
     
     
       8. The electronic device of  claim 7 , wherein a UE radio capability information update needed flag in the TAU request is set to 1, and/or an active flag is in the TAU request is set to 1. 
     
     
       9. The electronic device of  claim 1 , wherein the at least one communication processor is further configured to, before camping on the first cell:
 perform a first measurement on the at least some of the at least one first band among the plurality of bands, 
 based on a suitable cell not being detected based on a result of the first measurement, perform a second measurement on at least some of the remaining band, and 
 based on at least one of the first measurement or the second measurement, detect the first cell as the suitable cell. 
 
     
     
       10. An electronic device comprising:
 at least one communication processor configured to support a first network communication and a second network communication, and 
 a memory configured to store information about at least one first band supporting dual connectivity for the first network communication and the second network communication among a plurality of bands which correspond to the first network communication supported by the electronic device, 
 wherein the at least one communication processor is further configured to:
 connect to a first cell supporting the first network communication, 
 while being connected to the first cell, perform a measurement on at least some of the at least one first band among the plurality of bands, wherein a measurement on a remaining band except for the at least one first band among the plurality of bands is not performed, 
 perform at least some of a handover procedure based on a measurement result for the at least some of the at least one first band, 
 perform a measurement on the first cell, 
 identify whether a measurement result for the first cell satisfies a first condition, and 
 based on identifying that the first condition is satisfied, determine to perform a measurement on the at least one first band among the plurality of bands and not to perform the measurement on the remaining band except for the at least one first band, and 
 
 wherein, as at least part of identifying whether the measurement result for the first cell satisfies the first condition, the at least one communication processor is configured to identify whether the measurement result for the first cell is greater than a sum of a threshold value and a value set for a hysteresis operation. 
 
     
     
       11. The electronic device of  claim 10 , wherein, as at least part of performing the at least some of the handover procedure, the at least one communication processor is configured to:
 receive, from the first cell, at least one report condition for reporting a measurement result for at least one of a serving cell or a neighbor cell, and 
 identify a measurement result which satisfies the least one report condition among the measurement result for the at least one first band, and report the identified measurement result to the first cell. 
 
     
     
       12. The electronic device of  claim 11 , wherein, as at least part of performing the at least some of the handover procedure, the at least one communication processor is configured to:
 receive a handover command to a target cell which is identified based on the identified measurement result, and 
 hand over to the target cell in response to the handover command. 
 
     
     
       13. The electronic device of  claim 10 , wherein the at least one communication processor is further configured to:
 identify whether the first cell supports the dual connectivity, and 
 based on identifying that the first cell supports the dual connectivity, determine to perform a measurement on the at least one first band among the plurality of bands and not to perform the measurement on the remaining band except for the at least one first band. 
 
     
     
       14. The electronic device of  claim 10 , wherein the at least one communication processor is further configured to:
 perform a measurement on the first cell while the measurement for the remaining band except for the at least one first band is not performed and the measurement for the at least some of the at least one first band is performed, 
 identify whether a measurement result for the first cell satisfies a second condition, and 
 based on identifying that the second condition is satisfied, perform the measurement on the remaining band except for the at least one first band and perform a measurement on at least some of the plurality of bands. 
 
     
     
       15. The electronic device of  claim 14 , wherein, as at least part of identifying whether the measurement result for the first cell satisfies the second condition, the at least one communication processor is configured to identify whether the measurement result for the first cell is less than a value generated by subtracting a value set for a hysteresis operation from a threshold value. 
     
     
       16. The electronic device of  claim 10 , wherein the at least one communication processor is further configured to change a capability of the electronic device including information about a band supported by the electronic device from a first capability including the plurality of bands to a second capability including the at least one first band.